PWWP2B
Chr 10PWWP domain containing 2B
Also known as: PWWP2, bA432J24.1, pp8607
PWWP2B encodes a chromatin-binding protein that acts as an adapter between nucleosome components and chromatin-modifying complexes, regulating histone acetylation levels at actively transcribed genes by forming NuRD subcomplexes and recruiting HDACs to gene promoters. Mutations cause neurodevelopmental disorders with intellectual disability and developmental delay. The gene follows autosomal dominant inheritance and is highly constrained against loss-of-function variants.
Population Genetics & Constraint
gnomAD v4 — loss-of-function & missense intolerance
More LoF-intolerant than ~75% of genes
Mild missense constraint
The highest-scoring mechanism for this gene is loss-of-function (haploinsufficiency).
Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312. Mechanism ranking also informed by gnomAD constraint, ClinVar, and ClinGen data.
ClinVar Variant Classifications
251 submitted variants in ClinVar
Classification Summary
Curated Variants Distribution
Classified variants from ClinVar · 5 ACMG categories
| Classification | LoF | Missense + Inframe | Non-coding | Synonymous | Total |
|---|---|---|---|---|---|
Pathogenic | 0 | 0 | 92 | 0 | 92 |
Likely Pathogenic | 0 | 0 | 5 | 0 | 5 |
VUS | 0 | 122 | 11 | 0 | 133 |
Likely Benign | 0 | 9 | 1 | 0 | 10 |
Benign | 0 | 0 | 0 | 0 | 0 |
| Total | 0 | 131 | 109 | 0 | 240 |
LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly
View in ClinVar →Protein Context — Lollipop Plot
PWWP2B · protein map & ClinVar variants
Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.
External Resources
Links to major genomics databases and tools
Clinical Trials
Active and recruiting trials from ClinicalTrials.gov
No active trials found for this gene.
Search ClinicalTrials.gov →External Resources
Links to major genomics databases and tools